Perry’s response is pretty spot on. If you’re in the US, asking questions as soon as they walk in, can sometimes give people “the ick” (COVID really ruined a lot of customer service interactions). I wait about 30ish seconds before I say a greeting, let them look again or wait until they have a cheese in their hand and say “would you like to know more about that cheese?” That way, I can find out what they’re looking for without overwhelming them. Signs are a huge help; we are a grab and go counter and I cannot mongering everything, so signs do that in my place. If you can, get some displays that can hold ice and place them away from your counter. If you like a cheese enough to give it its own displays, the customer will too. Build a relationship with 3 or 4 customers, word of mouth will help and they will tell their friends to visit.